Child-Pugh Score Calculator

Liver Disease Calculator

Child-Pugh Score Calculator

Estimate Child-Pugh class for chronic liver disease and cirrhosis using bilirubin, albumin, INR, ascites, and hepatic encephalopathy.

Class A, B, or C Child-Pugh class helps describe liver disease severity and functional reserve.
5 Clinical Factors The score combines lab values with ascites and encephalopathy assessment.
Higher Score = More Severe A higher score generally suggests more advanced liver dysfunction.

Calculate Child-Pugh Score

Enter the latest values and select the clinical findings. The total score classifies liver disease into Child-Pugh Class A, B, or C.

<2 = 1 point, 2–3 = 2 points, >3 = 3 points.
>3.5 = 1 point, 2.8–3.5 = 2 points, <2.8 = 3 points.
<1.7 = 1 point, 1.7–2.3 = 2 points, >2.3 = 3 points.
Age is not part of the Child-Pugh score but may help clinical context.

Ascites

Select the patient’s ascites status.

Hepatic Encephalopathy

Select the degree of encephalopathy.

Child-Pugh Class Class A

Well-compensated liver disease based on the entered values.

Total 5 Total points
Bilirubin 1 Lab score
Albumin 1 Lab score
INR 1 Clotting score
Clinical 2 Ascites + encephalopathy
Child-Pugh Class A usually indicates well-compensated liver disease.
Medical note: This calculator is for educational use only. Child-Pugh scoring should be interpreted by a qualified healthcare professional, especially in patients with cirrhosis, ascites, hepatic encephalopathy, variceal bleeding, jaundice, infection, kidney dysfunction, or transplant evaluation needs.

Child-Pugh Score Calculator: Liver Cirrhosis Severity, Class A/B/C, and Interpretation

The Child-Pugh Score, also called the Child-Turcotte-Pugh Score, is a clinical scoring system used to assess the severity of chronic liver disease, especially cirrhosis. It helps estimate how well the liver is functioning and classifies liver disease into Child-Pugh Class A, Class B, or Class C.

This score is commonly used by doctors, liver specialists, surgeons, and healthcare teams to understand liver functional reserve, treatment risk, surgical risk, and overall prognosis in people with cirrhosis. The score uses five factors: bilirubin, albumin, INR or prothrombin time, ascites, and hepatic encephalopathy.

🧬 What Is the Child-Pugh Score?

The Child-Pugh Score is a liver disease severity score. It was originally developed to help predict surgical risk in patients with portal hypertension and cirrhosis, but today it is widely used to estimate prognosis and liver function in chronic liver disease.

The score divides patients into three classes:

🟢 Child-Pugh Class A — better preserved liver function
🟡 Child-Pugh Class B — moderately impaired liver function
🔴 Child-Pugh Class C — severe liver dysfunction

Cleveland Clinic describes Class A as normal or better-preserved liver function, Class B as reduced liver function, and Class C as severe liver dysfunction.

✅ What Does This Child-Pugh Calculator Measure?

This calculator estimates Child-Pugh class using five clinical and laboratory factors:

🟡 Total Bilirubin
Bilirubin reflects how well the liver processes bile pigment. High bilirubin may cause jaundice, yellow eyes, dark urine, pale stools, and itching.

🥚 Serum Albumin
Albumin is a protein made by the liver. Low albumin may suggest reduced liver synthetic function, poor nutrition, inflammation, or fluid-related complications.

🩸 INR or Prothrombin Time
INR reflects blood clotting function. Since the liver makes many clotting factors, a high INR can suggest impaired liver synthetic function.

🫃 Ascites
Ascites means fluid buildup in the abdomen. It is a sign of decompensated cirrhosis and portal hypertension.

🧠 Hepatic Encephalopathy
Hepatic encephalopathy is brain dysfunction caused by advanced liver disease. It may cause confusion, sleep pattern changes, personality changes, drowsiness, or coma.

Each factor receives 1, 2, or 3 points, with 3 points indicating more severe abnormality. The points are added together to give the final Child-Pugh score.

📊 Child-Pugh Score Chart

🧪 Bilirubin

Less than 2 mg/dL = 1 point
2 to 3 mg/dL = 2 points
More than 3 mg/dL = 3 points

Bilirubin rises when the liver cannot process bile pigment normally. A high bilirubin level can lead to visible jaundice.

🥚 Albumin

More than 3.5 g/dL = 1 point
2.8 to 3.5 g/dL = 2 points
Less than 2.8 g/dL = 3 points

Albumin reflects the liver’s ability to make important proteins. Low albumin may contribute to swelling, fluid retention, and ascites.

🩸 INR

Less than 1.7 = 1 point
1.7 to 2.3 = 2 points
More than 2.3 = 3 points

INR measures clotting tendency. A higher INR may mean the liver is not producing clotting proteins effectively.

🫃 Ascites

None = 1 point
Mild or controlled with medicine = 2 points
Moderate to severe or poorly controlled = 3 points

Ascites is one of the most important signs that liver disease has become decompensated.

🧠 Hepatic Encephalopathy

None = 1 point
Grade 1–2 = 2 points
Grade 3–4 = 3 points

Hepatic encephalopathy can range from mild confusion and sleep changes to severe drowsiness, stupor, or coma.

📌 Child-Pugh Class Interpretation

After the five scores are added, the total score classifies liver disease into Class A, B, or C.

🟢 Child-Pugh Class A: 5–6 Points

Child-Pugh Class A usually means the liver still has relatively preserved function. Patients may have compensated cirrhosis or fewer complications.

This does not mean the liver is normal. A person with Class A cirrhosis may still need regular monitoring, blood tests, ultrasound screening, endoscopy for varices when advised, medication review, and lifestyle changes.

General meaning: Better liver functional reserve.

🟡 Child-Pugh Class B: 7–9 Points

Child-Pugh Class B suggests moderately impaired liver function. Patients in this category may have more noticeable liver-related complications, such as fluid retention, abnormal clotting, low albumin, jaundice, or episodes of encephalopathy.

This class often requires closer follow-up with a liver specialist. Treatment decisions, medication doses, surgical risk, and procedure planning may need more careful assessment.

General meaning: Significant reduction in liver functional reserve.

🔴 Child-Pugh Class C: 10–15 Points

Child-Pugh Class C suggests severe liver dysfunction. Patients in this group often have decompensated cirrhosis and a higher risk of serious complications.

A person with Class C liver disease may need urgent specialist review, hospital-based care, transplant-center assessment, or close monitoring depending on symptoms and overall condition.

General meaning: Severe liver dysfunction and high medical risk.

The VA Hepatitis program lists Child-Pugh Class A as 5–6 points, Class B as 7–9 points, and Class C as 10–15 points.

🧠 Why Is the Child-Pugh Score Important?

The Child-Pugh score is important because cirrhosis can affect multiple body functions. The liver is responsible for detoxification, bile production, protein synthesis, blood clotting, metabolism, and fluid balance. When liver disease progresses, these functions can become impaired.

The Child-Pugh score helps healthcare professionals:

✅ Estimate liver disease severity
✅ Assess liver functional reserve
✅ Understand prognosis in cirrhosis
✅ Estimate surgical and procedure-related risk
✅ Guide treatment planning
✅ Support medication dose decisions in liver impairment
✅ Identify patients who may need specialist or transplant evaluation

The UK Specialist Pharmacy Service notes that Child-Pugh scoring is also used to estimate liver disease severity in cirrhosis and may be used by drug manufacturers to suggest dose adjustments.

🏥 When Is the Child-Pugh Score Used?

The Child-Pugh score may be used in patients with:

🍺 Alcohol-related cirrhosis
🦠 Chronic hepatitis B or hepatitis C
🥩 Fatty liver disease-related cirrhosis
🧬 Autoimmune hepatitis
🟡 Primary biliary cholangitis
🟢 Primary sclerosing cholangitis
🩸 Hemochromatosis
🧪 Wilson disease
💊 Drug-induced chronic liver injury
🫃 Ascites due to portal hypertension
🧠 Hepatic encephalopathy
🩺 Evaluation before surgery or procedures
🏥 Liver transplant assessment

It is most useful when chronic liver disease has progressed to cirrhosis or decompensation.

⚠️ Symptoms That May Suggest Advanced Liver Disease

A person with worsening liver disease may develop:

🟡 Yellow skin or yellow eyes
🌑 Dark urine
🤍 Pale stools
🫃 Abdominal swelling or ascites
🦶 Leg swelling
🩸 Easy bruising or bleeding
🤢 Poor appetite, nausea, or weight loss
😴 Severe tiredness
🧠 Confusion, forgetfulness, or sleep reversal
🫁 Shortness of breath from fluid buildup
🔥 Fever or infection in a patient with cirrhosis
🩺 Vomiting blood or black stools

These symptoms should not be ignored, especially in someone already diagnosed with cirrhosis.

🚨 When to Seek Urgent Medical Help

Seek urgent medical care immediately if a person with liver disease develops:

🚨 Vomiting blood
🚨 Black, tarry stools
🚨 Severe confusion or extreme drowsiness
🚨 New seizure
🚨 Fever with abdominal swelling
🚨 Severe abdominal pain
🚨 Difficulty breathing
🚨 Very low urine output
🚨 Rapidly worsening jaundice
🚨 Fainting or severe weakness
🚨 Sudden worsening of swelling
🚨 Any new or worsening altered mental state

These may be signs of serious complications such as variceal bleeding, hepatic encephalopathy, spontaneous bacterial peritonitis, kidney failure, or acute liver decompensation.

🧪 Understanding Each Child-Pugh Component

🟡 Bilirubin and Jaundice

Bilirubin is produced when the body breaks down old red blood cells. The liver normally processes bilirubin and removes it through bile. When the liver is damaged or bile flow is blocked, bilirubin can build up in the blood.

High bilirubin may cause:

🟡 Yellow skin
🟡 Yellow eyes
🌑 Dark urine
🤍 Pale stools
😣 Itching

In the Child-Pugh score, higher bilirubin receives more points because it may suggest more severe liver dysfunction.

🥚 Albumin and Liver Protein Production

Albumin is one of the main proteins made by the liver. It helps keep fluid inside blood vessels and supports many body functions.

Low albumin may be linked with:

🦶 Leg swelling
🫃 Ascites
💪 Muscle loss
🥗 Poor nutrition
🧬 Reduced liver synthetic function

In the Child-Pugh score, lower albumin receives more points.

🩸 INR and Blood Clotting

The liver produces clotting factors that help control bleeding. INR is a blood test that measures clotting tendency. In chronic liver disease, INR may rise when the liver cannot make enough clotting proteins.

However, clotting in cirrhosis is complex. A high INR does not always fully predict bleeding risk by itself. Doctors interpret INR together with platelet count, bleeding history, medications, procedures, and the full clinical picture.

🫃 Ascites and Fluid Buildup

Ascites means fluid accumulation in the abdomen. It often occurs because of portal hypertension and reduced liver function.

Ascites may cause:

🫃 Abdominal swelling
😣 Abdominal discomfort
🍽️ Early fullness after eating
🫁 Shortness of breath
🦠 Infection risk

Ascites can be mild and controlled with treatment, or severe and difficult to manage. Moderate or refractory ascites receives more Child-Pugh points.

🧠 Hepatic Encephalopathy

Hepatic encephalopathy is a brain-related complication of advanced liver disease. It may happen when toxins, such as ammonia, are not cleared properly by the liver.

Symptoms may include:

😴 Sleepiness
🌙 Reversed sleep cycle
🧠 Confusion
🗣️ Slurred speech
🤝 Hand flapping tremor
😵 Personality or behavior changes
🚨 Severe drowsiness, stupor, or coma

Hepatic encephalopathy can be serious and may require urgent treatment.

🔄 Can the Child-Pugh Score Change Over Time?

Yes. The Child-Pugh score can change as liver disease improves, worsens, or decompensates.

The score may worsen if:

📈 Bilirubin rises
📉 Albumin falls
📈 INR rises
🫃 Ascites develops or becomes harder to control
🧠 Encephalopathy appears or worsens

The score may improve if complications are treated, alcohol is stopped in alcohol-related liver disease, viral hepatitis is treated, nutrition improves, ascites is controlled, and the underlying cause is managed.

Because liver disease can change, doctors may repeat Child-Pugh scoring over time.

⚖️ Child-Pugh Score vs MELD Score

Both Child-Pugh and MELD are used in liver disease, but they are not the same.

Child-Pugh Score

Child-Pugh uses both lab values and clinical findings:

🟡 Bilirubin
🥚 Albumin
🩸 INR or prothrombin time
🫃 Ascites
🧠 Encephalopathy

It classifies liver disease into Class A, B, or C.

MELD Score

MELD is more lab-based and commonly used for transplant priority. Modern MELD scores may include bilirubin, INR, creatinine, sodium, albumin, sex, and dialysis status depending on the version used.

In simple terms:

Child-Pugh = liver function class and clinical severity
MELD = transplant urgency and short-term risk estimate

Both scores can be useful, but neither replaces a full medical assessment.

⚠️ Limitations of the Child-Pugh Score

The Child-Pugh score is helpful, but it has limitations.

Some parts of the score are subjective, especially ascites and encephalopathy. One clinician may describe ascites or encephalopathy differently from another clinician. Merck Manual notes that the severity assessment of ascites and encephalopathy can be subjective, which can reduce inter-rater reliability.

Child-Pugh also does not include every important risk factor, such as:

🫘 Kidney function
🧂 Sodium level
💪 Frailty and muscle loss
🦠 Active infection
🩸 Recent bleeding
🧬 Liver cancer
🥗 Nutritional status
🏥 Recent hospital admissions
🫁 Heart or lung disease
💊 Medication effects

For this reason, the score should always be interpreted with the full clinical picture.

✅ How to Use This Child-Pugh Calculator

To use this calculator:

  1. Enter the patient’s total bilirubin.
  2. Enter the serum albumin.
  3. Enter the INR.
  4. Select the ascites category.
  5. Select the hepatic encephalopathy category.
  6. Review the total score and Child-Pugh class.

Use recent lab values whenever possible. If symptoms are worsening, old lab values may not reflect the current condition.

📌 Key Takeaway

The Child-Pugh Score is a useful tool for assessing the severity of chronic liver disease and cirrhosis. It uses five factors: bilirubin, albumin, INR, ascites, and hepatic encephalopathy. The final score classifies liver disease into Class A, B, or C.

🟢 Class A usually suggests better-preserved liver function.
🟡 Class B suggests moderately reduced liver function.
🔴 Class C suggests severe liver dysfunction.

However, the Child-Pugh score is only one part of liver disease assessment. Symptoms, physical examination, imaging, kidney function, sodium level, bleeding risk, infection, nutrition, and specialist judgment are also important.

⚕️ Medical Disclaimer

This Child-Pugh Score Calculator and article are for educational and informational purposes only. They do not replace medical advice, diagnosis, emergency care, liver specialist assessment, transplant evaluation, or treatment by a qualified healthcare professional. If you have liver disease, cirrhosis, jaundice, abdominal swelling, confusion, vomiting blood, black stools, fever, kidney problems, or worsening symptoms, seek urgent medical care or consult a qualified healthcare professional.